{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258655155",
    "entityType": "User",
    "nonce": "0x858a90098bae1f3b9b39996f77e7b392e509e87e496b5d13175b5be3badc8558",
    "signature": "0xf7ce42eedf362326ecc2e070f37b6546648f3f0eaebf682257b53c360f95da912410dbd1fe39bf4d65e3415c8ce2f4840c6d6b717c73815753f343b6c387c2d31c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}