{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5de1a8ce4388a4e1f4b73ae6e4e7fceef9506fb2ce15ae53bc9cf76f2d846ab3",
    "signature": "0xd9d9cb417f4d0e2bab3e1aaaf3390e9a5e60fedb13d6b2e5495408ecc8f9d973724f0bc520e905eea7e9577458771cfe5ef94c8f21cbf4d6914e63b5a6522c631c",
    "signer": "0xE7A6e709348adEe468e979369F4f97b246A04302",
    "userId": "561451396"
  }
}