{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0x077474cd9b582b5783436f24e3d1cbf921e365df0eeeb34a8fd760f07c8dbf18",
    "signature": "0xf9e92e3dfd6448f79930d500eaf1bf55e8a3308dbe4e8dd1c9e8b050736766df0256ccd449de11c1a5089d9fb92f8269bc54d146f8a1ffab072d35cfb5fe811b1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}