{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7671c4cde55fbe448d87e77930515974ec6730757181d4e4005abe29fdbcaac6",
    "signature": "0x1a16cd0cf6f43a7cf38ff0fc96a94a0fbcc9ab99ca4de5f9713822d7c17eba1c54e58204956233d4fecb4b561c46230382b51b2a4168887fbdbfa25a4624aa491c",
    "signer": "0x1E431DE3D5FA141d3092F3EDD6044f6eeb3f281f",
    "userId": "745430018"
  }
}