{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x13f3467e98fe44eb3c022adc7d4273483a926a94ee20a9e0b2f71f2940e0454a",
    "signature": "0x5e12790eb3acb0c07cfdc7360ab27b16dd31841df87851b4d34167aa9f04ed2175abc2a50f0500484ba8dc813eb407f2c62e4f931d9ea3d5925458be39e7747b1c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}