{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "547969682",
    "entityType": "User",
    "nonce": "0x625fa44389222511aa239a5b386eada95101203ea9820a1e3ef51ba5d64828a3",
    "signature": "0x5f415dddcafb5e37d849ae789547d5a50f81844d4939da35689a8847b10721051a925a4d3d6a44bc0ebf0b1dcc12e8395e1e4f6fed2b430273e568279629d0161c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}