{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581802105",
    "entityType": "User",
    "nonce": "0x51513b2a8bb1d5835940d0e66a9363c7bfe244da7e2441184ef0039548950e31",
    "signature": "0xc25f6f820c236bf7d69f0958cc250ca5c2e5c10e04d87a8d67d43857eff995d26de9ac04d91f37f1da9527d324a12a84ac7713f8855cdddaf74fdf717e2100471c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}