{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd60f13b50b8eb401553b4219310305c7120458d8bfbe308f4ea70050f1cdb0c",
    "signature": "0x12fbf273d19308505e4c0d61c5218013f3c09ccfc7a0b2667ec533787d0f290f668a4387dd9c51f905574118e2979fbaccace3c01b81e81fdb301c15256eb1901b",
    "signer": "0x3D59bb7330Fbf2AD3f9482E052eBfCd683DEa744",
    "userId": "109830197"
  }
}