{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258655155",
    "entityType": "User",
    "nonce": "0x69d19aae7aae9c3182937eaf0790d09701e98c029582d77da077e3413aeebfc6",
    "signature": "0x78d7c49aca51b3073788f6dda5c5820e2a3163094026874a90d4b47f6013d1f1381c17f3e719d2c617fc9dc61df0d2cee8e18e928b46941db4018493b557a9351b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}