{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402644297",
    "entityType": "User",
    "nonce": "0xb8cfd16847486622592153ece869f4598c5a3b2bb7a576487c9974a91b1f0591",
    "signature": "0x9e9006686a3487ec18cc12ae1487160931bd2226dcf5be4f129555e25f25c8224c05df28dc1fcbb7fadc0fd16a2d3f030c4fe4e3e7d0f3dca2c2c305167535091b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}