{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778583001",
    "entityType": "User",
    "nonce": "0xe7e48500cefd273558c91413c61768fb594b0bb08e55774fbfebbb0242abbca4",
    "signature": "0x9b545181c14435959f25c596b774405e3b0465ec1797ae6162ab5f6836ce14ef2c7e4db13a455a76f97a928f6728270a4bec319f812981c71e08212655aa225f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}