{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a0a155e6df60ca8c35f764efd82adeed02bf8be4695d3ae0d5e0488346bc3ac",
    "signature": "0x28f4c0ac7ee309e2e06866bcfc337ae108e7690370922e14206025bb3eefeb8a1894868ab1b0ddcf42dc3d9b0ef07c1aa155d79247ac828c661073c67c3cd4f81b",
    "signer": "0xc23B5e8f2Ecf23Cb3a24a8BbBC3B82C4146eBE91",
    "userId": "273018072"
  }
}