{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51888",
    "entityType": "User",
    "nonce": "0x1f1af075816b3c480bbfe6f330ddcd9a9fd20dd9de496d598b68835db3552c0e",
    "signature": "0x716266cd371f7b7beee1b2f1322273d35eb17cb85cd4d1376d455f824c849bf259a2a5485a23e51224fa8c75783831f0dd093368a091c2cb6d20bca1bbf5db0c1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}