{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x757ec594979c3940423dd756a7e95b27d5ecf804bd7ca6e765f5b71b6359c586",
    "signature": "0x17383de301a3a09ee56a54587c4d7ddd89ffa77259e45b9640ca8ad57135883719cfbe70ec471913efeb8a8bbcae27060f917d0b3627f8e6b3282ebbb917e2801c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}