{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318550",
    "entityType": "User",
    "nonce": "0xa642761863a3a604ce8173309bdc305216c68543cf53cc64dabf63f2ca20bf90",
    "signature": "0x8c9ee6c9939da7d7407c00e3ca113d5f3e6db6e76bddaeafe8515fb2add808e24d2f5d5c61d963ca5b1460b28553f34e346549fb482812ac6a1fd2826ebfae661c",
    "signer": "0x99184440Ee6a129090E49a1c231270aBC49a9427",
    "userId": "21285244"
  }
}