{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2154",
    "entityType": "User",
    "nonce": "0x53509982feb59c8c7e9c21477a3942fdb8bd14f25b2978b89b0bbee7648e84cd",
    "signature": "0x5193fd4860be917ae52d342f7755562793378431eac10ab3124e32583a05b7ef5a907a2d827d31f25a83d814591517163626b0c63080ee1eaeec03ca6565c4db1b",
    "signer": "0xb90dea25446900B58b936FB95262D7557e6115B7",
    "userId": "559908939"
  }
}