{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "498174",
    "entityType": "User",
    "nonce": "0xa514f9be4da3090d4b0ada17337f726388ef7812ba7c59b8bf6536e877c6132c",
    "signature": "0xfb2d692a3e8fcc2a3ad3da47d953fc0076dd4750dccd99450ab94b93c0fc92bb05b5fe2b80f0c9994b7bc691d4d741e96c6b42a73dba37dbcfd49174db8368a61c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}