{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71389d95abd5825e7369194935037eec131bf3a2171091b39851d66b8ad3ba58",
    "signature": "0x70d09e6ff651d49dbe4bb331b84caa7cf0fe0653a159d7a53cab101a4dcde6e559e443bae2976c1c1bd96b99b3bc0c32e08e0b2712c7007ab9b12e363484b7dd1b",
    "signer": "0x4973a2698A555d1edF2Ce89971EeBee4E76BD27F",
    "userId": "995350214"
  }
}