{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0xf6c6e72081c4fc2a8128c976bc85eb4c6197bfe48add79dfeb65706530ad8e86",
    "signature": "0xa2a0cbeac6763e61d9d3abe4b0f4cd579111a5bf47392d420328ff751fbd56433e4029b4934d682e737b3c963d781951e2090e6d1b65a7680767b2322479d54c1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}