{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75465",
    "entityType": "User",
    "nonce": "0xc9d9f18ccae531aa3531a4854d277ef87156cd93aff4644ba6eac38bb35b1a41",
    "signature": "0x1ee60161dff062df9a5d03798140387a381810b91d056e824ee9f4fed28085c6630d37de783fe057adb67d09a8cd1a417dc81bd47ef26e5847af25b217fbae3e1c",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}