{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351386054",
    "entityType": "User",
    "nonce": "0x524691e596c9b077d402124470af2faa03f15fbf8bae406924c3fae637e8b3ed",
    "signature": "0xdacd4664c9709f020c8abcd67f19672518afc084f7a014c47872ee99cd4fdb2f4de66f2547fe1f66b2a066977ab1d5ff0dcea407a971143fa549eac57dcbfc121c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}