{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d3581686dcf5aa7a5a6aeea772e80c54d69909eb8816ef3ab3c0102a6f25573",
    "signature": "0x3ee447df9d24a61f12973e3fe3d73afee09de285d1e78e0c5eed89629a0b218b0f382cae81933a334083fc66bf7f79101a096c0a77e7629a53de61a8cc78218c1c",
    "signer": "0x704abd5d0d95b9fbade936509806C7bb1173B8ad",
    "userId": "147912601"
  }
}