{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "808512351",
    "entityType": "User",
    "nonce": "0xf98a77d3d5da40e85e2a536378ea88da833781f6c4377b11539b9a098b9d8e27",
    "signature": "0xc20ae8c64745e2b4a20b2d96fa0b1d3d979d3c4d0c6a67c54547f4b1c8316f294ae03f6a04ffdc9652505fe3508a5c9e6bbd797e157a39ba0ee0deb1f5a502ee1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}