{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x814ebde268466f60a3fcd0f95cdcdb01632f1e1720c8393f96a22c35d05e0f4a",
    "signature": "0x2693613f4cc03f4b6cd40a03dbca9dbcb6470713160db640cb0fcffc9730012f494ca83d9d11d97b08cb69fdd9bf048110b75f4ffbadf0106d361c7ae4d0f9f81b",
    "signer": "0x66033a8AbA9dde9bFbe6b9A7bd392F9949b1A659",
    "userId": "39891515"
  }
}