{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd05c092ab564fa1d59c74b9054bee6140e8766d9ebbdecd06012590dfbb116af",
    "signature": "0xa568e996e8a7fd9c9cd1ad57fc67600fdb3dbd6e1bbb62f6e0e01fdb5b0af31869aa2e8d8cfc3b62bdf5b51e59bf014a54b3db313a93428e9c4e6664f58c48b71c",
    "signer": "0x7491fDe640F47Eae956591A6c69c5E761cd41267",
    "userId": "763983893"
  }
}