{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xf4b8e58ee24e85697e749af8f010e257e37dcc948f8ca9f0b5a8abde36d13aa1",
    "signature": "0x4042b77a34671e1997e8129b9d25a88bf89d5b0fe784cf6d698075394232a3616d68858d9e052833cebd5b7cc4dd1388bf96d7f25625fbfcdce1d144c5a71b301c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}