{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146164104",
    "entityType": "User",
    "nonce": "0xec640170d4619bd2e3b9a0e2b2791604a56bf31e2110261e544a1daea5326969",
    "signature": "0x846ced67433a28dd79cf0bd70c08381b581a4410a758a56c2edc79a032945ab907174bc53871751b13ef1fec0d4cb327182c6816965116e20ef8f27f83a388ee1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}