{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57e5011c9d8aa9ab82bd35e8ad4dadcc1b09bad937ae59d124d753a729048d34",
    "signature": "0x007bb9732c6adc8bd9c1aceb524cec0f232810ade882b208ca05f82fedd3790d1bfca2ce690d530c3a899d3e230510cc2124e057cb16501c22ca352d775bbe4c1b",
    "signer": "0x1E0619427fbAA6B83C375aa4DFECb642e7E337eb",
    "userId": "137931068"
  }
}