{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319004",
    "entityType": "User",
    "nonce": "0x5a5f51cfd49b33210b0ebd72d0f0aabf6cc3d5832c27b37d08215e4413ff2c48",
    "signature": "0x4ef2230faa32fcd6d05b8a35968af7bc44b2ee71d0222f8bb4db879c1338eb7c2dc56b38857e11b8443fffa197b3bda161d42ffd1d8c97718750fdfa5db082551c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}