{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "532019440",
    "entityType": "User",
    "nonce": "0x07d64b77a02f2d1aa97e7e5ad29282cc382dfdb3f0e30bf1bd788804d8f08b09",
    "signature": "0xc7d142a27f8cfe8355ae4e315a729d77e416d6429df85cc80b8e84977e2eb3850a0e0516a8e27ee56a565e477dde09f39fc9c0ba7d4b7073ce5d22d9dff236bc1b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}