{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x96b5d2f7424c76236f278596a171b8909ea30a9bdf912ea7b9e3f61dd59d4a03",
    "signature": "0xebb8a877f2f333204cae07f86f22ad54bcf42edbf2f6e763230cefa7feb465e25a270bf0d8e7e3e9718013343742d496214d7f1532767502a6184c39e506f2f61c",
    "signer": "0x4662bBF6A7b9a7171F78c683034B8B44Fb341Da0",
    "userId": "931836020"
  }
}