{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0x56293f90deecf016ec68a5bb505580bafe9f66c48ed64def33d34a34912c27dd",
    "signature": "0x2de88152252d560dc5d4300867a60d208e94a4ac53e27d3674823279ad2c94055d937c3e03d847f412fee5958a3405b67776f730a821d58a91afdd0b252320321b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}