{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2def42061e51c839c9ac31a45c47def280538822f8143dd037a3ab409d98bbe",
    "signature": "0x7539b32a1561d61c61be3293f80fec58ea4e8486a5fb3e5fe7fb018af0428e185c03a1a36e34b7383fef133e194b5b90041908ce6af2aec0e5b93a00441900201b",
    "signer": "0xBF23b207dCd7D0F2e635B21211819130e4f997F2",
    "userId": "325743520"
  }
}