{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fe73f44b02edcbd66f996bab509982bb59a2f28bb7d61ced33f49ec32ceae51",
    "signature": "0x5d326877750e2b5cbe99f7b4fc98498bc56a2616d19daa7494abab61c4fffd3179dfe459ef14a8c8d025105e93ccb4c1aee7159761fdc29b278f7d395afe86521c",
    "signer": "0x14b3624316A323b3651b2b2E5935D05878DCb48C",
    "userId": "408921878"
  }
}