{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdada001a56f2385dc9f2fd613a8e2613cedc7f96f13d62487e3940a3761c9176",
    "signature": "0x3f2a1202f538e074e3e1b2dcfc70bc150c416abd0dd065f39f22b6a32969b3ea0b95048f5aed4bcb4c2c40f6fcd14795f99353a8fc5604b35956bb9112a4069e1b",
    "signer": "0x5f2CeEE91c8826621E0Dca9853a13269C73c064e",
    "userId": "103931016"
  }
}