{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134619804",
    "entityType": "User",
    "nonce": "0x2f368328b9c91da39eca6dcb2d74caea3f12479c897ea5a5406b2c702f65c5c1",
    "signature": "0xa900cc565a16eb5f1347aeeb183b5e168f91762556a20cdbc47ed44bc289e6a838acd8f598574b59ca3f1a1cedbcb71787d01e95ccfa1d578b838a19d90ee2381c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}