{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5bbef53967b83ceb28941824e2e22bfc6adce7d79990d4e6d99977f436021126",
    "signature": "0xc1d28e5d64001e867f6fc690e71578485a7e52f69e5edcb50f56e724c1b2428a59418c3140cb04e15655746fb291eb38ae6df791df2722b90b186c24a1f825241b",
    "signer": "0x7bE37db95995dA6f7A04761610FfCFdD804a5cC6",
    "userId": "589001907"
  }
}