{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688850395",
    "entityType": "User",
    "nonce": "0xc6a1c119f6fdabcf2d58d9ebf0eeb9fc3f223daeeb6ea535370539907f5fa23b",
    "signature": "0x4a292183e9c61c48b6a480a231775a00ea5eb96df32d9eba54c8bb39d5680277235424874d6d1db2fb446158a5d5d5441336b822f049ba63e2d30c77d7b93ff81b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}