{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61c1ce8501d8c874dc1f5a8a59cf0a714bc6a394623784b9fe8a6e3686f6d370",
    "signature": "0x660cc0f1dffe48f48753ff4a996198192ca4652ae8a73fe795ac535b7db5738f33dab668eec2ce0412808f76bcc7228a0aed267cdb0fe231f1a9bb352668b97e1b",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}