{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328810",
    "entityType": "User",
    "nonce": "0x9f5a03e6d0fbc7a19626a9d80f96b5554b792ed31e1775f470a8277f7355760b",
    "signature": "0x712a3e05761fece074571ee42201685601a4caad6446b59db96192aaea3c1acf646486eaea7d43320eb2b7fdabdf86f5039698923733359332356b52f21cacad1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}