{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "513320098",
    "entityType": "User",
    "nonce": "0x704b00f7c3d37263e0a804a20c857386a3291f4458e6ce8c04149b1d313dcf02",
    "signature": "0x82fce11588514b5d7645b76191e20fc284ae46a6f4f8c09a83a0615f58dff6fb52f60dd5dd0d14c73abb93fa17aff924cbbc56f30204796d322162a35c06dc391c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}