{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6e6241bcdc8812f0e3fa2199a825b3a1c103a35eeed1ddd0dcb33ec438110c74",
    "signature": "0xa65374c219a7ba9a083f512b143c4c6ddeab25463ef55f273ff43e084de0848a158c8b077b38bb9b93dce45969c8ddf04823ebca0403e94ee14d98f0d6eb2efc1b",
    "signer": "0x18fB4D3fA7B11f57452d736433C9B5373E0AfE98",
    "userId": "359136613"
  }
}