{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3ddc67bb05d21b40166b333a0d6a7b6be9fc2a287abbbd3b79ae7b24c8ba9ec9",
    "signature": "0x80c0383b5c5a8384e6ed528626f6b01f8b03815659f42ae6f8353af6e148aab51f6029ebc210a0ea7519829f0f536f6291dd526faa93206cdc8094faf6f3ddd41b",
    "signer": "0x3B56F03a62298a40720ab731A29231Ab2391037A",
    "userId": "523918731"
  }
}