{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15eec3e9775fc2d15bd5ce9dccc9c2aa472fa0dea630f173883751234178a44c",
    "signature": "0xfa1d394d14727a5a0c0679d63e9bcd0aa6110c7e6fb511e2400cef55783d01463f5444eb4d265186b03d6a3987ec2ea869817e209b5e74115f06ab4c1313a8fe1b",
    "signer": "0x63eD341eAe0269d9C71a59862C0013faC0b10a16",
    "userId": "11868595"
  }
}