{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629530515",
    "entityType": "User",
    "nonce": "0xb8527b92efe25e8718fb097f9a8625c043aa7021baa1c12bb609605c70491293",
    "signature": "0x98ef3b9ee51f8b0bfcab8d0511f32ac4c76c0e02674e257efe0753c6ca11159a67cb9f2e20331d95e22b005f02487b546e8c774429c2588f8e883b50cf44ee921c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}