{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138775",
    "entityType": "User",
    "nonce": "0x46886bef556039f1746f797bca89b2cef525ea5c515d1383b1e821f67f9f1482",
    "signature": "0xe8d2000afb89840d4fd78a81954f869c94359a99c4b4ecf57f25e3b3e56d6e2b783649444e310e8a3c48dabfd58a0b83068240db3655c2533d88977d1c365c911b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}