{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51345",
    "entityType": "User",
    "nonce": "0x2be8eb547795077f20f87beb2be064b892a21df62c2ea2cf17efa350c88b54e6",
    "signature": "0x3868428753786c513258972f891189c3c0db57924cc965a2df2d9bda88f566600d0a50a6159d6693184887782302b4e2775ad4eee6f6c5e3652611700bd3c7d21b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}