{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c3a49bd185d108caca01f5c3ecae2d307b47ff7b794fe7f752d0d1a7d7d5412",
    "signature": "0xe914a8f491075580e4422b320aa7067caeed5b252fa4047c6bb5fec874518ac4134345784459550f4105a0651469e7c0a41e985a9e142779c3ed05ef2f19256e1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}