{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a55e959d73c6b0688c00fcefd1dee1166650662d53e60c06fc7b26004b777ae",
    "signature": "0xbc84a75b4908f1b7a106da558c973889196840d77b84b34b472256962d2bbd177db47320c532fe2363461902ebfa3f5adf7b9d515af118297f385d2510acb22a1c",
    "signer": "0x81f60DEAd0cdA833Ad17fe7Ddd37b36E62630205",
    "userId": "132087202"
  }
}