{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "70376395",
    "entityType": "User",
    "nonce": "0xd93af1f223beb3b6d780f9d36df4d6c03ff4295a0ba4ec2dc0bc46835b7f96d1",
    "signature": "0x3d6f87cb1aa909b4c08ec93a6feb9db4ee5cc7a86edaca9a9adbf2cd3c7bed8f385f98f9141ad1e0519ccff72baba8d4b2ec5733bded2669a103ae25ba7c11b31b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}