{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe8e878acc005f8af634aed4185bdec0578fd0b2ab64f2fa512e74bae155a6057",
    "signature": "0xede7497a711114d577df7d8ffda4e92d091f1679c23daffbaf572b11c5ea171851454d224fa455e647a1160c98910b0e17149b56e8a3fa54993e00f9369c82b61c",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}