{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "846566967",
    "entityType": "User",
    "nonce": "0xa3f2ecf0ebb628ca4029439e364cdbc6abf1ed9144640dc63e4c10bc603cca80",
    "signature": "0x772cbb32e25acdf6e1838f7498bbd271b51ddb74ced639dac36f2a4077b7e9c00d28da7ccfd0d943a84673a63a4395db1623a0a8836b7b2acebaa42af280a2ee1b",
    "signer": "0x64B0DA55A684D51d3EF114Fe644eac7db132fDb7",
    "userId": "121304325"
  }
}