{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a6a52db3a9780bbe3002646d54b4d41d0b9d5d4574fe9e4411e4f023f9aef3f",
    "signature": "0x304f54148a4bf0d3390e9c19a586e4768442ea5642b078ef1b9230c2255c114d04286f4c1a352b166fc4daa13a5dfeda40c2f2b407d9e4a8dd769847005a96a51b",
    "signer": "0x1c84301095a111E5fFa1e88C239FdE8FB68E581C",
    "userId": "172591069"
  }
}