{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf570bfb201cba68325b42a1ee114caa9bc1b1ed3d2e3f2d49d471bb472930a22",
    "signature": "0xcfa4551156ce07fccd2ac4619bd9ebbffc92ee281fabf6db8b70bde011038dfa599a127b165ceade69bbb8e2e4082cc8e1c35ca837834301de2be72537588dec1b",
    "signer": "0x68FcF23730770DbCd0Bf6cBE87649Bf95320aFDe",
    "userId": "106648682"
  }
}