{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a1d2ac00165302ff638892b9af06a438a79e23e267ebdfd7a8b7bced89680e1",
    "signature": "0x50e848a1b4c1e3e930c96c3097e0d5404b93a74b0db89e87aa5abadf1a71a6ea0b04a2f2cb9e46b36034effb549de37703ce2cd2c62fc7f0851958e1d0ceab661b",
    "signer": "0x8A2eb611ED13B7Bc9CED13f52F7e15b1055eA0EC",
    "userId": "472472299"
  }
}