{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951546743",
    "entityType": "User",
    "nonce": "0xc2223ad8339110e252001a997a3e9234817bdfb97cdc2a37e6701014de201432",
    "signature": "0x2790234bae23753a934d82c10977811a4c98a341858b60ea1928bf6d21dcc2226e03ac4a8de0d5c3850f9adbe5cbafd3b338e411cca2874361d110d47d7d01a11c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}