{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138454",
    "entityType": "User",
    "nonce": "0x2a17e30e66c15ea5a72d8ee951762b1a232331b775ac7bc8daae593e380a4a4e",
    "signature": "0xca89aede8fac5209caaad7d0b4a54dd12db093d11135532f7fcca9fb74337f9f6be0e4ec4d76be5a75e46671262cc13735306cbf791978e415e3f5426d4475061c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}