{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "616387",
    "entityType": "User",
    "nonce": "0x9e808e2d5c3113ae19030055a4b18c61d9af94d06bf6e830babb3c12a49d02e0",
    "signature": "0x8ef7a8421c6a72ebbc8bbb319e6473589396cbe37e1f8f73660f3a7ad8852c704568ed4d87192acd0c6495e6c4949f9d1384cc420bec497e64c2de3cc0f5a4bc1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}