{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x4c4fd675027e70653f3c3a4d988ebed651a3d7d0e3aecaccf15f1d02c3735bff",
    "signature": "0x916f40fb5d713bd508542be3ae51b0c70684871b2fe0003157281af95e71be66382481a3864f4dde04ca4c03d4712937fd6df944d256c0848f2e49620287d7811b",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}