{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302848",
    "entityType": "User",
    "nonce": "0xa3d65f20efc074728ded783c9ec2c6bcb89eecf599f38f48dfd68d22e3675e2b",
    "signature": "0x5221c1087c38119a853d0a3062874141e7b9debbbcea685fb4dbf888b24097cb641c22dcc5fb97fe05c24b49f00ae6b0f913dd93d840c50ac77e1522adce8fb51c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}