{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2af97eb818565c6fac4ee42dc3f62f19a9c4b7b47e2fb038a3ad6d1d32965ed4",
    "signature": "0x03a3f8942c83a4b1c1848fd1b26aa42dea37590062ff38158df393ef8672551a229cebb4d886fa2a6d87fb37d45dd054bac2db32d43adbb42dd1143cfdc4717e1c",
    "signer": "0x19Ef7aB90A425646F24020D3b88Fd21BC2ADb4b9",
    "userId": "438301978"
  }
}