{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212031",
    "entityType": "User",
    "nonce": "0x2c3ccdb26abaa100936aed540c457d3453793ec5e81718d8bbdecb16bf243341",
    "signature": "0xdf641fb9958a539e0740331f01b5486dd1b705da2e733bb0e044eedc5ae4d5e95cded86973c276e42baeac0d73a86fde9fdf2719e7860fcb0de9ea8d37553cfc1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}