{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "479380221",
    "entityType": "User",
    "nonce": "0xc812303242c641c03bf22a373c06c7f63a51a22fc06b3c635de2a0d666a9e64e",
    "signature": "0x1d86174918fd94282c54ae5567136a85142bc3d43d77bb4c63c9d01d6f51bc735710848277b749b81eaab9b85d5a4efc77d70a1b014c40758a5a8c731c3dc0661b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}