{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3784a66e1d4ac5331c0e0100fbeb0576ebc56b19a25d89f893b60d513b0bf8da",
    "signature": "0xc57333782a080847ccfb4e8351c706adfdf7f603ad82f1b81519fdde2ce4cf0b032b008befab6c395dd16d1f9eb054f5cba4403d121e435ffe6c5553088ed3041b",
    "signer": "0x0122Edf0b170378764A2498d19389f3396D9262b",
    "userId": "496925868"
  }
}