{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x562bd3b813a42e0c64499009086c651a40356493637974711b409a93a2aa0872",
    "signature": "0x1d81e2ae1498fcfadd4569d0cc24c885e19fbe0ac5f302272840700c25312ec00b4560206bc0d795890cf34c5ffe9054df24502f402892688c3022a979f621c71c",
    "signer": "0x1773D1194f451b3CbEd4A1CD4e94Fb8e6665C787",
    "userId": "378101386"
  }
}