{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a6485467020e8afaba08406db7956ac551a88e611ecceb8a572b086efe52f67",
    "signature": "0x4099fc322284834cd9038057106c9b6896facd66592c8ac735dfab66f610e9e5789095bbdd1215c84f48694c901d2775254b67b4aee9bdc19a8b9afb1cd46a941c",
    "signer": "0xa4B2FAd8C7b22e3dD48C0e716585F337C8B2F67e",
    "userId": "798556165"
  }
}