{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303078",
    "entityType": "User",
    "nonce": "0xe4ee9f40305d8faf03247cf7f56b209216405ad030e398d9733959d35fed8321",
    "signature": "0xfa728be38b7d2b81654254bffc19587bc9660963166cfc2c5db5c609d566efea079ff985f8bb346b4218b7a840545029dab494e9a91cca6317792bcbdc1a085d1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}