{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d199c3042fee8b3faa7b325b4e77fe0beec3c3056196dc4b3b79499a2b74d00",
    "signature": "0x2d0644b1c447f53e70d6bfbe1bf549e1b5aaabd7044526349090bfd4d1d5932b0c9d424a897f7e1fd8c3fe73e3067f2393660257142a38e47e0e99a10b53bafe1c",
    "signer": "0x2c93018Ec80482402e0270De617331aAD32E694c",
    "userId": "131458840"
  }
}