{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1894901",
    "entityType": "User",
    "nonce": "0x347900beed09b6308783537643ba606f10435717829f963ccb86f4de7f97897d",
    "signature": "0x5f557f21ec16fddb187dad25681047859e9ed6cd4800b1950bef1836ac68b9682575aa0e2f83d766890f3cd2ea7ca9fda3151881d9cab3f1ee9f7bd6c31906221b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}