{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0x6d9c06a08b0ee129f669d14729be196a970420b220bf93d7afbd9df2f5615bdc",
    "signature": "0xdeaf49d3dafae0f23dd0bbb81a9121e115103d2bb5be11c045566de3df2c32e70653388498c751dd9d6c541f847a7230af8c33ecbe033137696f84b99b878e1b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}