{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e51e7487fe9c048c04a26177c32ecbc6489c97f7983c03bf430bb5d587b006d",
    "signature": "0xef7952f8316c3df010ade762c752d31fa8434531766ee97f05d8aeaba42f0cb02494c1af76f8d8483a19b903aab2bb2751a9510f95a2c322fb01f55deb8dc7c41c",
    "signer": "0xe4a05cF7dd9aA79AFa348681b6250746DB7182d9",
    "userId": "950040772"
  }
}